Schiff bases and organoaluminum compounds have wide applications
in medicine and catalysis. TG-DSC provided melting points and melting
enthalpies for the Schiff base ligand (1, 2-[[(2,6-difluorophenyl)imino]methyl]phenol,
CAS: 26672-04-8), with T
m
at 349.55 K and ΔH
fus
at 22.797 kJ/mol, and for the organoaluminum compound supported
by the ligand (2, [2-[[(2,6-difluorophenyl)imino]methyl]phenoxy]dimethylaluminum,
CAS: 2851050-89-8), with T
m
at 396.04 K and ΔH
fus
at 11.137 kJ/mol. The range of molecular electrostatic potentials
for the two compounds was obtained by molecular electrostatic potential
analysis, with the potential range for compound 1 being
from +95.1 kJ/mol to −133.2 kJ/mol and that for compound 2 being from +139.9 kJ/mol to −132.7 kJ/mol. Hirshfeld
surface analysis indicated that H···H contacts were
the dominant contact interactions in these two molecules. In addition,
the solubilities of the two compounds in 11 pure solvents were determined,
and experimental data were correlated using 7 thermodynamic equations.
The results displayed that the NRTL model had the best correlation
result for the two compounds. These experimental results will have
significant implications for the purification, crystallization, and
industrial applications of similar types of substances.